baber/WOPTO huggingface dataset:
Patent GB-584871-A (GB)
Title: Improvements in alternating current telegraph systems
IPC: H04L5/06
Filed: 1944-12-08
Abstract: 584,871. Multiplex telegraphy. SIEMENS BROS. & CO., Ltd., and CRUTCH, L. S. Dec. 8, 1944, No. 24670. Drawings to Specification. [Class 40 (iv)] In a multi-channel A.C. telegraph system in which the channels are evenly spaced, e.g. by 120 cycles, within the voice frequency range, the channels are arranged at the transmitter in groups of three or four channels, the same set of basic frequencies being used for each group, and the resulting group frequencies are progressively shifted by modulation of carrier frequencies and selection of one or other of the side-bands. A mathematical investigation shows that to obtain even spacing the number of basic frequencies should be equal to 2f/s-1 or a submultiple thereof, f being the lowest basic frequency and s the spacing or channel width. In a 21-channel system, the channels are grouped in threes with basic frequencies 420, 540 and 660 cycles and for one group these frequencies are transmitted unchanged. For the remaining groups, three carrier frequencies 1440, 1800 and 2160 cycles are employed, the lower side-band being selected for one group and the upper one for another group, thus giving even spacing between 420 and 2460 cycles. For a 20-channel system, a fourchannel grouping would be used.
Patent GB-1067135-A (GB)
Title: An improved hydraulic transmission system
Inventor: MOYER DONALD W
IPC: F16H61/40
Filed: 1964-06-15
Abstract: 1,067,135. Hydrostatic transmissions. INTERNATIONAL HARVESTER CO. June 15, 1964, No. 24670/64. Headings F2C and F2D. A hydrostatic transmission for a vehicle comprises a pump 10 or a series of pumps having a fixed displacement output 15 supplying pressure liquid to power steering and hydraulic lift apparatus 18, 23 and four variable displacement outputs 26 . . . 29 supplying pressure liquid to a range selector valve 30 which selectively connects one or more of the variable outlets through a reversing valve 36 and seriesparallel valve 41 to two motors 44, 47 connected to the driving wheels of the vehicle. The series-parallel valve 41, as shown, connects the motors 44, 47 in parallel to give a slow speed and when moved to its other position connects the motors in series for a higher speed. Forward or reverse drive is obtained by upward or downward movement of the reversing valve 36 from the neutral position shown. The outflow from the motors 44, 47 passes through valves 59, 60 which are normally held open by pressure liquid supplied through restricting orifices 65, 66 from the main supply line 35. The valve opening pressure may be vented by manually opening normally closed valves 71, 72 whereupon springs 166, 166a close the valves 59, 60 to restrict the outflow from the motors 44, 47 which are thus braked. During parallel operation either motor may be braked independently and during series operation the valve opening pressure lines are interconnected through lines 74, 75 and the series-parallel valve so that operation of either valve 71 or 72 closes both valves 59, 60 to ensure that the motor outflow is restricted. During overrun reduced pressure in the line 35 permits the valves 59, 60 to partially close and thus brake the motors 44, 47. The range selector valve 30 may either connect one variable displacement output 26 to an hydraulic lift line 34 which supplements the pressure liquid supplied thereto from the fixed displacement output, one or more outputs to the driving motors 44, 47 and the remaining outputs to a power take-off motor 80, or may connect two variable displacement outputs to each of the driving and power take-off motors, or may connect all four outputs to either the driving or power take-off motors. The range selector may, as shown, comprise two valves in series or may, Figs. 7 and 8 (not shown), comprise a single valve. Pressure liquid is supplied to the power take-off motor 80 through a line 76 and forwardneutral-brake valve 77 which latter in the brake position restricts outflow from the motor. All the valves are manually operated. Pressure relief valves 20, 25, 32, 53 and 88 are provided. Cavitation is prevented by permitting liquid to be sucked into the main pressure line 35 and the power take-off motor circuit through one-way valves 56, 89b. The system may be used as a parking brake by positioning the reversing valve in neutral and the series-parallel valve for series operation.
Patent GB-1469124-A (GB)
Title: Detergent composition
IPC: C11D3/37
Filed: 1974-06-04
Abstract: 1469124 Detergent compositions TENNANT CO 4 June 1974 [4 June 1973] 24697/74 Heading C5D A detergent composition comprises (a) 5- 75% of builder selected from: sodium tripolyphosphate, sodium tripolyphosphate mixed with sodium sulphate, potassium hydroxide, sodium carbonate, sodium phosphate, sodium pyrophosphate, sodium hydroxide, nitrilo triacetic acid, sodium citrate and potassium citrate. (b) 0À1-30% of surface active agent selected from mixed mono- and polyglucosides of C 8-10  alcohols, octylphenolethylene oxide adducts and nonylphenolethylene oxide adducts, and (c) 2-40% of flocoulant selected from polyacrylonitrile, polyacrylamide, polyacrylic acid and salts thereof, polyamides containing carboxylic groups, polyamines, polyethylene glycol, sodium carboxymethylcellulose, sulphonated polymers, bentonite clay, Guar gum, leguminous seed derivatives, seaweed derivatives, starch derivatives and poly(diallyl dimethyl ammonium chloride). The composition may also include sodium alkaryl sulphonate or ferric chloride.
Patent GB-486176-A (GB)
Title: Improvements in or relating to wall pins, hooks, clamps or like supporting means
IPC: F16B13/08
Filed: 1937-09-10
Abstract: 486,176. Wall clamps, hooks, &c. PATERSON, D. H. Sept., 10, 1937, No. 24702. [Classes 89 (i) and 89 (ii)] A wall pin, hook, clamp, or the like comprises a screw-threaded stem 1 formed integrally at its front end with a hook or a peg 5, a pair of thin bars 6 pivoted at 5 out of their centre at or adjacent the rear end of the stem, a shoulder 7 between the bars and the stem, and a milled nut 4 screwed on to the stem to clamp it in position. The shoulder may be replaced by a washer, and the rear end of the stem may be reduced as at 8. The inner surface of the nut 4 may be flat or concave, and its outer surface convex or with a rounded-off periphery.
Patent GB-502409-A (GB)
Title: Improvements in and relating to fibrous materials impregnated with plastic materialsand moulded products prepared therefrom
IPC: B64C11/26
Filed: 1937-09-11
Abstract: 502,409. Moulding synthetic resin. PHILIPPE, C. D., and BAKELITE, Ltd. Sept. 11, 1937, No. 24805. [Class 87 (ii)] [Also in Groups VIII and IV] A material suitable for making moulded products comprises a sliver or slivers of cotton, wool, flax or asbestos impregnated with a heathardenable synthetic resin, e.g. a phenol-aldehyde resin made with a basic catalyst or containing hexamethylene tetramine, urea-formaldehyde or alkyd resin. The impregnating material may be an ethyl alcohol solution of a resin made from cresol and formaldehyde in the presence of ammonia or an aqueous phenol-formaldehyde initial condensation product. Sheets comprising impregnated slivers flattened to ribbon form and united edge to edge are cut to shape, superposed so that all the fibres lie in the same direction or so that the fibres in alternate layers are at rightangles or in different directions in different layers, and subjected to heat and pressure. The impregnated slivers may be used as reinforcement for laminated materials made from impregnated woven textiles or sheets of paper, or for mouldings made from moulding powders, e.g. spinning buckets for artificial silk. In making airscrew blades sheets of the impregnated slivers are cut to the shape shown in Fig. 4, where 9 is a curve showing the variation in cross-sectional area of the blade along its length. Each sheet is rolled up about edge 10 and a sufficient number of rolls are placed in half moulds and pressed without heating sufficiently to harden the resin. The two halves are then moulded together under heat and pressure. The root of the blade may be strengthened by curving the ends of the sheets outwardly as shown in Fig. 5. The cavity 11 may be filled with waste pieces to provide a solid end.
Patent GB-248892-A (GB)
Abstract: 248,892. Garratt, E. A., and British Steel Piling Co., Ltd. Feb. 2, 1925. Piling.-In steei sheet piles of H section having parallel flanges 4 at the ends and formed with a trough 3 in the web not extending to the flanges 4, the flanges are symmetrical about the central axis of the web. Such piles are interlocked bv clutch members 5 as described in Specification 6212/07. The troughs may be arranged alternately towards opposite sides of the piling wall. Specification 212,720 is referred to.
Patent GB-485139-A (GB)
Title: Improvements in or relating to horizontally sliding sash window frames and the like
IPC: E06B3/46
Filed: 1937-09-13
Abstract: 485,139. Sliding doors and windows. FRANCOTTE, J. Sept. 13, 1937, Nos. 24918, 24919, and 24920. Convention dates, Oct. 17, 1936, Jan. 6, 1937, and Aug. 14, 1937. [Class 20 (iii)] Two sliding doors or windows 1, 2, of the kind which lie in the same plane when closed, are adapted to be displaced one in front and one behind the closing plane when opened, as shown in Fig. 8. The sides of the guide grooves in the upper and lower members of the fixed frame 3 are gapped at 25, 26 to allow the guide rollers &c. to move transversely into sliding positions. When closed, the sashes make double contacts with the frame the contacts lying in. two planes A, B, the fixed frame being formed to provide the contacts by cutting a section-bar and turning through 180‹ and rejoining. Tapered studs may be provided in the guides of the sashes which enter holes in the frame flanges to position the sashes for closing. The upper frame member may be provided with holes 29 into which the runners of the sashes are introduced to facilitate removal from the frame. The guide way may have a copper, brass or the like lining 23. Each sash is held closed by a sliding bolt 31, Fig. 10, having studs 32, 33 engaging tapered slots in plates 35 on the end frame member. The sashes and frame may be curved on the horizontal plane.
Patent GB-469862-A (GB)
Title: Improvements in and relating to the construction and assembly of light structures
IPC: E04G7/26
Filed: 1936-02-03
Abstract: 469,862. Metalwork structures. LOWE, J. G. W. Feb. 3, 1936, No. 24930. Divided out of 469,893. [Class 20 (ii)] A hollow structure 1 is formed of metal elements secured together longitudinally, and opposed elements in the member are provided with lightening holes and also bolt holes 3 in alignment to permit the passage of securing bolts, when securing the members together to form a structure. The bolts pass across the space from the outside of one member to the outside of the contacting member and in one form, Fig. 4, the bolt has a T-shaped head 5 which is passed through aligned apertures in the members and is then rotated to engage the metal on each side of the aperture in the member on which it bears. As shown in Fig. 5, the bolts are hook-shaped and pass through one member and along the side of the contacting member, the hooks 9 engaging the upper edges of this member. Specification 469,893 is referred to.
Patent GB-532504-A (GB)
Title: Process and apparatus for heating and bending objects in heated condition
IPC: B27H1/00
Filed: 1939-09-01
Abstract: 532,504. Bending wood &c. BEUKEN, C. L. Sept. 1, 1939, No. 25146. Convention date, Sept. 10, 1938. [Class 145 (i)] Objects such as lengths of bamboo, cane &c. are arranged closely adjacent a flexible heating element and after sufficient pre-heating, are bent, together with the heating element, to the desired shape. Sticks may be inserted into a coiled electric heating element while hollow rods may enclose the element.
Patent GB-1335415-A (GB)
Title: Disc-shaped semiconductor device and method for manufacturing same
IPC: H01L23/051
Filed: 1971-04-19
Abstract: 1335415 Semi-conductor devices SEMIKRON GES FUR GLEICHRICHTERBAU UND ELEKTRONIK mbH 19 April 1971 [25 March 1970] 25205/71 Heading H1K A semi-conductor device is mounted in a housing comprising an annular insulating body closed by two conductive end members, one member being bonded to the body and the other member pressing against a sealing ring arranged in a groove in the end of the body and having a flange which is mechanically deformed over a peripheral formation on the outer face of the body. As shown, Fig. 1, a semi-conductor wafer 1 is bonded between two contact members 2, 3, the gaps being sealed with varnish 1a, and mounted in a housing comprising a ceramic ring 4 to one end of which is soldered or brazed a first end plate 5 the other end being closed by a second end plate 6 which is mechanically deformed over a rib 4a to secure it to the ring, a sealing ring 7 being provided in a groove 4c in the end of the ceramic ring 4. The contact members 2, 3 may each comprise an inner layer of Mo and an outer layer of Cu, and the end plates 5, 6 may be of precious metal, Cu, or Fe-Ni-Co alloy. The outer face of the insulating ring may be provided with an annular depression instead of, or in addition to, the rib 4a. In a modification, Fig. 3 (not shown), the wafer (1) is arranged between two precious metal foils (11) and is centred within the housing by an elastic spacer (12), e.g. of silicone rubber. The contact members comprise inner plates (2, 3) of W or Mo and outer plates (8, 9), one outer plate (8) being secured to the ring by an annular diaphragm (10) and the other outer plate (9) having an integrally formed extension which contacts the sealing ring (7) and is deformed round the rib (4a) on the body. Provision may also be made for semi-conductor devices having a control electrode.
Patent GB-1125880-A (GB)
Title: A panoramic objective for photography or projection
IPC: G02B13/06
Filed: 1967-05-31
Abstract: 1,125,880. Optical apparatus. VOLPI A. G. May 31, 1967 [June 1, 1966], No.25208/67. Heading G2J. A panoramic objective comprises a front lens having a forward domed portion 2, e. g. generated by a parabola, which refracts the rays 1, and a rearward portion 3 adjoining thereto for totally reflecting the rays which have been refracted, and a divergent meniscus 4, convex to the front, for correcting chromatic aberration, so that in the air space behind meniscus lens 4, a panoramic image 5 is formed covering in azimuth a 360 degrees field of view. As shown the image 5 is an intermediate image 6 having a neutral central zone 7 which is not covered by the vertical acceptance angle of the front lens, and, to reduce this, the rays are passed through an achromatic field lens 8 to a hollow cone 9 having parallel inner and outer surfaces, so that the rays are displaced inwardly towards the optical axis 10. Thus in the final image 16 formed at plane 15 by lenses 11-13, the neutral central zone has been contracted to the point 17 on the optical axis 10.
Patent GB-1062845-A (GB)
Title: A method of and apparatus for determining the thermal expansion of materials
IPC: G01N25/16
Filed: 1964-06-19
Abstract: 1,062,845. Measuring thermal expansion. D. BOENISCH. June 19, 1964 [June 21, 1963], No. 25424/64. Headings G1D and G1J. Apparatus for determining the thermal expansion of moulding or core sands and other refractory materials, comprises means for supporting a test specimen 1, a fixed probe 11, a movable probe 12 displaceable in response to expansion of the specimen 1, the probe 12 being connected to a pivoted beam 14, 14a, and beam displacement sensing means connected to the beam. The test specimen, preferably cylindrical, is held between the probes 11, 12, which probes are of quartz glass and comprise a vertical port and a bent over port 11a, 12a respectively which contacts the circumference of the specimen 1. The beam 14, 14a is fulcrumed at 16 and contacts a pin 22 connected to a piston acting as a valve between an air supply tube 25 and an open chamber 24. Thus as the specimen expands in the direction of the arrow 29a the valve is opened reducing the pressure in the air supply tube and giving a measure of the expansion. The fulcrum 16 is vertically adjustable using a handwheel 17 and the piston and valve housing are adjustable along a rail 32. The specimen 1 is supported on a vertically adjustable knife edge 34 and is guided by an element 38 carried by an arm 37 secured to the knife edge 34. The knife edge 34 is vertically adjustable to allow the probes 11, 12 to contact the specimen at desired depths below its top surface. In use, with the specimen 1 in place an air pump 40 Fig. 9 is started and this supplies the air to the tube 25. The handwheel 17 is adjusted to give a suitable opening of the valve, the air pressure in the tube 25 being communicated to a gauge 42 and chart recorder 41. The top surface of the specimen 1 is then heated using an acetylene burner fed from a tank 44 by way of an electromagnetically operated valve 45. The arrangement is such that as by operating a single switch the valve 45 and the chart drive in the recorder 41 are both started together. The expansion of the specimen at the level of the probes 11, 12 is then traced by the recorder. Tests may be carried out with the probes 11, 12 at different levels, using thin disc specimens, and using different additives in the sand.
Patent GB-1437542-A (GB)
Title: Bonding apparatus
IPC: B29C65/00
Filed: 1973-06-22
Abstract: 1437542 Laminating apparatus WEGU GUMMI-UND KUNSTSTOFFWERKE WALTER DRABING KG 22 June 1973 [2 Dec 1972] 25610/74 Divided out of 1437541 Heading B5N  An apparatus for bonding at least two sheet materials in selected areas thereof comprises a metal pressing plate 10 which is adapted to be heated and which is provided with a plurality of projecting surfaces, and a wooden bed plate 11, e.g. of plywood having a substantially planar so that when sheets to be bonded are pressed between said pressing plate and bedplate bonding is effected only in selected areas determined by the positions of said projecting surfaces. The apparatus may be used in carrying out the method of Specification 1,437,541.
Patent GB-584872-A (GB)
Title: Improvements in navigational chart protractors
IPC: G09B29/10
Filed: 1944-12-21
Abstract: 584,872. Map holders. LUARD, W. B. Dec. 21, 1944 No. 25648. [Class 146 (ii) [Also in Group XX] A map holder comprises a rear storage compartment, a further compartment to receive the map in use, a transparent sheet a covering the latter and pivotally supporting a graduated disc d and rules k, l, (see Group XX), by means of a press button, and a transparen cover sheet m pivoted at p and secured in position by press-buttons n. A channelled closure strip q hinged at r is held in the closed position by a spring clip s. Additional compartments t, u are provided for pencils and the rules k, l.
Patent GB-785366-A (GB)
Title: Improvements relating to the transference of solid particles between systems at different pressures
Inventor: JR DAMON ALLEN DAVIS
IPC: B01J8/00
Filed: 1954-09-03
Abstract: A high-pressure chamber 10, suitable for fluidized catalyst reactions involving regeneration, fluidized hydroforming of petroleum products and synthesis of hydrocarbons, fluidized tracking of petroleum products, has solid fluidized particles maintained by gas introduced through 12.  The gaseous products are separated from solid particles in cyclone 14 and flow out of the system through conduit 16.  Solid particles settle into the vertical conduit and may be scrubbed with a scavenging gas introduced via conduit 20.  The passage of gas through conduit 20 is at such a rate that the solid particles <PICT:0785366/III/1> slowly settle into the portion of the conduit 18 below conduit 20 and are supported by a cupshaped member 22 positioned at the base of the column and within hopper 28 which is at a substantially lower pressure.  Gases from the high-pressure system and the scavenging gas may be vented at low pressure through vent 24 which is prevented from venting solid particles by wire cloth filters held in place by pipe nipples 36, and pipe couplings 38 see (Fig. 2). The pressure of the gas at the base of the column is therefore relatively low and the accumulation of a small pile of catalyst in cups 22 prevent the uncontrolled flow of particles from the column. Particles may be removed from 22 by blowing with gas passing through nozzle 26 or may be removed by normal transport means and conveyed into hopper 28 and thence to any desired location of low-pressure reactor thus ensuring transfer between high- and low-pressure reactors without using long stand pipes &c.
Patent GB-765710-A (GB)
Title: Improvements in and relating to sewage disposal
Inventor: HOPPER HENRY VICTOR
IPC: C02F3/10
Filed: 1954-09-06
Abstract: A percolation filter for sewage disposal plants comprises a base layer of clinker and a surface layer of prepared or graded ash.  In an example the filter is 24 feet square and 12 inches in depth, is provided with brick side walls, and consists of 9 inches of clinker topped by 3 inches of steam boiler ash having a particle size between three eighths and three sixteenths of an inch.  It is supported on virgin earth or on about 20 feet of valley gravel lying on chalk. The rate of flow of effluent therethrough is approximately 4 1/2 times as great as that through conventional beds, the degree of purification being unimpaired.
Patent GB-1261264-A (GB)
Title: Improvements in conveyors
IPC: B23Q7/14
Filed: 1969-05-21
Abstract: 1,261,264. Endless conveyers. ROBERT BOSCH G.m.b.H. 21 May, 1969 [21 May, 1968], No. 25796/69. Heading B8A. Workpieces 20 positioned on individual carrier plates 4 and conveyed by a pair of spaced parallel endless belts 1 are stopped at each of a number of work stations 5, 6, 7 by a movable stop 24. The stop has a pair of arms 25 and is pivotally mounted such that one arm 25 may engage a lug 23 mounted on a carrier to stop the same with the workpiece positioned accurately relative to the respective work station and on release of said carrier the other arm engages the following carrier to prevent the release thereof until the same can be advanced to the work station. At the end of the belts, after the workpieces have been removed by means, (not shown) the carriers are discharged by a pusher 9 on to a shoot 8 and thence by a pusher 10 to the return run of the belts. At the other end of the belts a pusher 14 feeds the carriers to a lift 13 and a pusher 15 then returns the carriers to the belts. The belts are formed of a wear resistant material with a low coefficient of friction with metals e.g. polyamide and are each supported by a slide 16. Side walls 18 are provided to retain the carriers on the belts and at one of the work stations wherein a press, for example, is utilized, the slide 16 is broken and an anvil (34), Fig. 3 (not shown), is positioned just beneath the belts so that in operation the workpiece is supported by the anvil when acted on by the press. Each carrier 4 has a locating boss (21), Fig. 2 (not shown), with a lug (22), to receive the workpiece.
Patent GB-464849-A (GB)
Title: An improved optical appliance for use on all motor vehicles' identification numbers, train name-plates, advertising signs, notices, and the like
IPC: B60Q1/44
Filed: 1935-10-08
Abstract: 464,849. Signs. MILNE, J. S. Oct. 8, 1935, No. 25827. [Class 3 (ii)] A cylindrical lens is mounted in front of a sign to magnify the matter displayed. The Figure shows the application to a vehicle number plate wherein a lens A is mounted in front of a stencil S secured in an illuminated casing C, the lens being protected by mudguards B. Reference has been directed by the Comptroller to Specifications 16724/11, [Class 106 (i)], and 349,787.